Publication: Deuterium trapping in the subsurface layer of tungsten pre-irradiated with helium ions
Дата
2021
Авторы
Kanashenko, S.
Harutyunyan, Z.
Gasparyan, Y.
Ryabtsev, S.
Efimov, V.
Ogorodnikova, O.
Pisarev, A.
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Аннотация
© 2021The effect of He-induced defects in tungsten on the efficiency of trapping of deuterium ions in the subsurface layer was studied using thermal desorption spectroscopy (TDS). The W sample was pre-irradiated with 3 keV helium ions at room temperature and various fluences in the range of 1019 – 5 × 1021 He/m2. Then, it was exposed to a probe fluence of 1019 D/m2 of 2 keV D3+ (670 eV/D) ions, and in-situ TDS was performed. The de-trapping energy for D atoms increased with the increase of the He pre-irradiation fluence. On the other hand, a strong decrease in the D retention was observed if the He fluence increased above 1021 He/m2. At the highest He fluence of 5 × 1021 He/m2 deuterium trapping was possible only after partial release of He atoms. By comparison of experimental TDS spectra with modeling, the de-trapping energies of D atoms from various defects were estimated.
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Deuterium trapping in the subsurface layer of tungsten pre-irradiated with helium ions / Kanashenko, S. [et al.] // Journal of Nuclear Materials. - 2021. - 548. - 10.1016/j.jnucmat.2021.152848
URI
https://www.doi.org/10.1016/j.jnucmat.2021.152848
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https://openrepository.mephi.ru/handle/123456789/23664
https://www.scopus.com/record/display.uri?eid=2-s2.0-85100740941&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000635060500006
https://openrepository.mephi.ru/handle/123456789/23664